The high school years are one of the peak times for depression to occur, particularly in girls. Most adolescents on occasion feel sad, get "the blues," or have trouble coping, but it’s important to note if these moods are more frequent, or start to interfere with daily life.
Sometimes people think that drinking or smoking pot will help them feel better by escaping their worries and problems. But alcohol is actually a depressant, which could make you feel even worse.
It sounds like your friend is trying to convince herself — and you — that her pot smoking is not harmful. But research has shown that smoking any amount of pot has a number of well-known associated risks and health consequences like it causes memory and learning problems, distorted perception, and difficulty thinking and solving problems. These are all things that would make her life even more challenging. Also depression, anxiety, and personality disturbances have been associated with chronic marijuana use.
Your friend says she is only smoking a little weed, but even this amount is likely to lead to more frequent use. And she may be complicating things if as a result of her smoking, she falls behind in her schoolwork, loses motivation for things she once loved, or gets caught by her parents. If you can’t talk to her about your concerns, try to convince your friend to talk to a trusted adult or
seek medical help,so her depression and other concerns can be addressed as soon as possible.